Stone cutting and polishing machine



De.2;.,193o.A RBJONES 1,185,737

STONE CUTTING AND POLISHING MACHINE Filed Aug. y26; 1927 2 SX'leebS--Shee'c4 l GI' GO A o0 Mem Wyss f/ :Lim

Dec. 23, 1930. r l R. B. JONES 1,785,737

STONE CUTTING AND POLISHING MACHINE Filed Aug. 26, 1927 2-s'h'eets-sheet 2 Patented Dec. 23, 1930 FUNir-ED STATES PATENT OFFICE ROBERT B. JONESQOF BARRE, VERMONT, ASSIGNOR TO lJONES BROTHERS COMPANY, OF

BOSTON, IVIASSACHUSETTS, A CORPORATION OF MAINE STONE CUTTING AND POLISHING'MACHIN E y Application inea August 26, i927. 4 serial No. 215,602.

v This invention relates to a device for` cutting and polishing stone and more particularly to a machin-e made in two similar units for cutting, polishing and otherwise worki 'y 5 ing upon the bevels or washes of stone blocks such-'as arey ordinarily used monuments.V

Among .the objects. ofthe invention are to provideadevice capable of operating on le two opposite washesof a stone base simultaneously; Vto provide a device in which a bevel or wash of any desired angle or depth may be formed and operated upon to provide a device capable of accommodating as bases for l5 stone bases of different dimensions within the limits of adjustment thereof; and to "provide a machine of the character described in which various abrading devices may interchangeably be used for performing differ- Y 20 ent' operations of cutting or polishing and to produce various types of finished surfaces. Other objects of the invention will be specically pointed out in the subjoined claims and will be apparent from the following specification taken in connection with the acv companying drawings,V in which: Fig. 1 is an elevation of the entire appara- Vtus vshowing a stone basey in operative position;

30 Fig. 2 isan elevation of one Vof the units Vshown in Fig. 1,'-the axis of the diskbeing.

turntable, sof that when one pair of bevels or Y washes have been completed, the stone may di one of which is Y upon( The'. device as here illustrated is made as two similar units, one on either side of the stone, ywhereby two opposite Vwashes maybe shownV at '5j/may be operated -r lbe turned at right angles and the other pair,

operated upon simultaneously. These units are shown connected by suitable strengthening members 6 to increase their rigidity.

Inasmuch as the units are identical, adescription of one will suffice for the present purposes. The unit is mounted upon a base 7 which may be in the form of a suitable foundation not here shown) .having-thereon a pair of upstanding wall members 8 and 9,

at whose tops are horizontally extending guldes 10 and `11, which may be constructed kof metal or vother suitable material, the

guides being fastened to thewall members in anydesired manner, as for example by nails, screws or` rivets indicated at 12 in Fig. 4. In these guides slides a carriage generally indicated at 13, here shown generally rectangular in form and constructed of a pair of longitudinally extending members 14 and 15 having portions 16 and 17 respectively which are received in the guides 10 and 11.' The longitudinally extending members are connected by cross pieces 18 either integral Vwith the side members or fastened thereto in any'suitable manner as by screws or rivets 19. A rack 20 may be fastened to-theeross members 18 to cooperate with a pinion 21 mount4 ed on a shaft 22 which may be provided with a crank 23. Thusv it will be seen that turningfthe crank 23 will traverse the carriage 13 horizontally in the guides l0 and 11.

Av frame generally indicated at 24 is A mounted by pivots 25; and26v to the forward end of the carriage y13,A the pivots being received in suitable brackets upon the carriage. This frame is made up of side members 25 Aand 26, shown vertical in Figs. 2, 3 and 4, connected by cross members 27 and 28. The cross members are provided with suitable kbearings at substantially their center portions to receive a shaft 29 upon the lower end of which the abrading disk 30 isA mounted.

` Means are'providedfor adjusting the angular relation of the frame 24 with respectto the carriage13, these means being here shown in the form'of a rod 31 which is swivelly mounted at its upper end 32 to theH upper cross piece 27 on the frame in any desired manner, such for example as providing the cross-piece 27 `with a pairof extended portions 33 having a short shaftv (not shown) rotatably -m-ounted between them, which shaft is provided with an aperture through which the rod 8l may pass and means on the rod for preventing longitudinal movement with respect to the shaft,y but permitting rotary motion. The Vlower portion of therod 3l is threaded as indicated at 34 for cooperation with an internally threaded aperture in a shaft 35 mounted similar to the shaftat the upper endy of the rod in projections 36 on the carriage.V The lower end of rod 31 may be provided with a hand wheel 37 for theV purpose of rotating it and thereby adjusting the angle of the frame 24 with respect to the carriageil.4 j i Y' y The side members 25 and 26 ofthe 'frame 24 may be provided with inwardly directed guides 38V invvhich is mounted'for ,sliding motion a beam 3 9 having' an enlarged central opening 40 through which the shaft 29 passes, this shaft being provided on either side of the beam with suitable rigid members indicated at 4l for kpreventing aXialmotion relative thereto, A but permitting Vrotary motion. Means are provided4 for adjusting thel position Vof the beam 39 inthe frame'24, these means'here `shownas a pair of rods r42, one adjacent to either side of the frame 24, the rods being threadediiito the beam'39' and having their upper ends passing through suitable bearings in the cross piece 27 andlprovided with bevel` gears-43 above the cross piece.

Thesebevel gearsa're engaged by a pairl of bevel gears 44 mounted upony a common shaft 45 which is j ournaled in suitable bearings in Y' extended portions 46 of the cross piece 27, the shaft 45k being provided at one-'end with a crank 47 by which it may be rotated to rotate the shafts 42 through the gears k43 and 44,

land thereby move the beam l39 with respect to the frame 24, thusalso adjusting the position of tlieshaft 29 and the abrading disk 30, Means for rotating the disk may comprise a bevelfgear 48splinedtotheshaft y29 by pro- Y viding the shaftgwith a suitable longitudinal groove 49 andthege'ar with a ton-gue fitting therein and an electric motor k50 mounted Vin the frame and provided with la bevel.y gear e v5l cooperating with gear 48.

` lt will be obviousthat-stonesxof various widths may be operated uponv by vtraversing' the carriages liof each unit iin or 'outas may be necessaryg-bevels of variousY angles may-be formed or operatedupon` by rotating Vthey hand wheel? to change theangle of the frame 24 with respectto lthe carriage i3 thus Vchanging the angle of theplane ofthe disk k30 which Vbears upon ythe wash; Vand stones of various `heights may be accommodated byrotating the''crank` 47 to raise or 'lowerHthe-disk, this latter adjustment: when i the frame is in an oblique positionrequiring also a corresponding variation in .the horizontal position'of' the carriage. l'It is'contem'- plated that for, fast work where quick'change of adjustment may be necessary, cranks 23 and 47 and the hand Wheel may be operated by suitable power driven means, 'as forV examplev electric motors, the application ofY which will be obvious.

Referring to Fig. 5in which I showa modified form of the grinding disk support. Reference characters 8, 9, l0', l1', 14', 15, 247

Y"257', 2,6, 48, 50V and 51' designate corresponding parts. to those designated by the reference characters in Figs. l to 4 without the-prime marks. ln Fig. 5 l have shown amodiied means for moving the carriage toward and away from the work, this means;

ybeing a pair. of elongate screw 52 which are neously rotating'them to move the carriageY toward or away from the work. l

The frame v24 is ivotall. mounted u on `the brackets 14 and 15 bythe pins 25 and' 26: and comprises side Vmembers 54-and 55 having rabbets56 and 57 therein for the recepticnof ride ribs 58 ofthe slida-ble member 59. Plates 60 are bolted as shown-at 6l t0' side members 54 and 55 to retain the side .ribs 58 in the groves or rabbets. Athreaded bolt 62 is vmounted in the cross piece 63 of the frame 24 so as to permit it to be rotated but is prevented from longitudinal movement by collars 64 and 65 fixedV thereon either side of the member 63, bolt 62 being threaded into an esy enlargement 66 in the slidable member 49.

Any suitable Vmeans maybe provided for rotating the bolt such as aliand wheel or any desired power'drive. v i

The grinding disk 6'7fissuitably fixed to the lower end of a sliaft'68 which is journalled inv antifriction bearings in the member V59.

Suitable means for driving theV shaft68 are '.1

provided, comprising a motor 50 .mounted in the member 59 and adapted to drive'the shaft through the bevel 'gears 48. and 51'." f

The form of the machine shown in Figj 5 koperates substantiallythe ysaine as tliatshownV in Figs. l to 4 with the exception` that the motor' isibodily movable with the rod and grind- Y connection. This is anadvantage as itminimizes the wear of the parts and permits the fuse of, more efficient bearings.A In-addition,Y

the grinding' diskl 67 is alwaysclosely adjaing disk, tli'usdoi-ng laway withthe splined cent to the lower bearing of the support 59 i and therefore chattering-,andrwear yof the` 'bearingsjs minimized. g; y Y i Y' 'vt will v-be'seen, therefore, that I have provided a device including an abrading disk Y which is-capable of universal motionlin a verticalfplane containing the axis ofthe disk within the limits of the adj ustmen'ts,'thefino-` 3 Vvic quire the use of a derrick.

'f lt is obvious that many variations may be made in the device shown Without departing from the spirit of the invention, and l do not wish to be limited, therefore, except by the scope of the appended claims.

claim:

l. A machine for cutting or polishing Washes on stone bases comprising a support, a frame mountedV thereon, bearings in the frame, a shaft journaled in the bearings and movable in an axial direction, guides in the frame parallel to the .axis of each shaft, abeam ,Y sliding in the guides having an aperture thereinV through which the shaft passes, means on the shaft to prevent its moving axif j' ally With respect to the beam, means for vary- Y ing the position of the beam With respect to and capableof rotary and axial motion therethe frame, a disk mounted on 'the end of the sha-ft having abrading material on its outer face, and means for rotatingthe shaft effective in all adjusted positions thereof.

d 2. A machine for cutting or polishing Washes on stone bases comprising a support, a carriage horizontally slidablethereoii, means for adjusting the position of thecarriage with respect to the support, a frame pivotally n mounted in the carriage for swinging movement in` a vertical plane, means for varying the angular position of the frame with respect to the carriage, bearings in theframe, a

shaft in the bearings, a disk mounted on one in, a beam slidablyreceived in the frame having van aperture through which the shaft passes, means on the shaft for preventing its moving axially with respect to the beam,

. means for adjusting the position of the beam With respect to the frame, a Wheel splined to the shaft, means mounted in the frame for driving the Wheel andy shaft,and -a disk Vremovably mounted on the end of the shaft yhaving its outer' surface provided with ,abrading material.

4. A machine for cutting or polishing Washes on stone bases comprising a support, a frame pivotally mounted on the support for swinging movement in a vertical plane, means for varying angular adjustment of the frame with respect to the support, bearings in the frame, a shaft journaled in the bearings for both rotary and axial motion, a beam slidably mounted in the frame having an aperture through Which the shaft passes, means on the shaft for ,preventing its moving axially with respect to the beam, means for adj usting the position of the beam With respect to the frame, a Wheel splined to the shaft, means mounted in the frame for driving the Wheel and shaft, and a disk mounted on the end of the shaft having its outer surface provided With abrading material.

5. A v machine for cutting or polishing Washes on stone bases comprising a support, a carriage horizontally slidable on the support, means for adjusting the position of the carriage with respect to the support, a frame pivotally mounted in the carriage for swingino' movement in a vertical plane, meansA for varying the angular position of the frame with respect to the carriage, bearings in the frame, a shaft journaled in the bea-rings for both rotary and axial motion, a beam slidably mounted in the frame having an aperture through which the shaft passes, means on they shaft for preventing its moving axially with respect to the beam, means for adjusting the position of the beam With respect to the frame, a Wheel splined to the shaft, means mounted in the frame for driving the Wheel and shaft, and a disl: removably mounted on the lower end of the shaft having its outer surface provided with abrading material.

6. A machine for cutting oi polishing Washes on stone bases comprising a support, a carriage horizontally slidable on the support, means for adjusting the position of the carriage 'With respect to the support, a frame pivotally mounted in the carriage, means for varying the angular position of the frame With respect to the carriage, guides in the frame, ay member sliding longitudinally of the frame in said guides, a shaft journaled between the guides with its axis parallel thereto, the sliding member having an opening receiving the shaft, means for preventing axial movement of the shaft with respect to said member, anr abrading disc on the end of the shaft, means for sliding said member relative to the frame to vary the position of positions thereof. Y

Signed by me at Barre, Vt., this 30th lday of June, 1927.

ROBERT B. JONES.

lli', 

